dlangui.graphics.gldrawbuf

import dlangui.graphics.gldrawbuf;

class GLDrawBuf: dlangui.graphics.drawbuf.DrawBuf;

drawing buffer - image container which allows to perform some drawing operations

@property Scene scene();

get current scene (exists only between beforeDrawing() and afterDrawing() calls)

@property int width();

returns current width

@property int height();

returns current height

void beforeDrawing();

reserved for hardware-accelerated drawing - begins drawing batch

void afterDrawing();

reserved for hardware-accelerated drawing - ends drawing batch

void resize(int width, int height);

resize buffer

void fill(uint color);

fill the whole buffer with solid color (no clipping applied)

void fillRect(Rect rc, uint color);

fill rectangle with solid color (clipping is applied)

void drawGlyph(int x, int y, Glyph* glyph, uint color);

draw 8bit alpha image - usually font glyph using specified color (clipping is applied)

void drawFragment(int x, int y, DrawBuf src, Rect srcrect);

draw source buffer rectangle contents to destination buffer

void drawRescaled(Rect dstrect, DrawBuf src, Rect srcrect);

draw source buffer rectangle contents to destination buffer rectangle applying rescaling

void clear();

cleanup resources

abstract class SceneItem;

base class for all drawing scene items.

class Scene;

Drawing scene (operations sheduled for drawing)

void add(SceneItem item);

add new scene item to scene

void draw();

draws all scene items and removes them from list

void reset();

resets scene for new drawing - deletes all items

void onObjectDestroyedCallback(uint pobject);

object deletion listener callback function type

void onGlyphDestroyedCallback(uint pobject);

object deletion listener callback function type